25964431 has 4 divisors (see below), whose sum is σ = 27331000. Its totient is φ = 24597864.

The previous prime is 25964429. The next prime is 25964441. The reversal of 25964431 is 13446952.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25964431 - 2¹ = 25964429 is a prime.

It is a super-2 number, since 2×25964431² = 1348303354307522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25964441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683256 + ... + 683293.

It is an arithmetic number, because the mean of its divisors is an integer number (6832750).

Almost surely, 2^25964431 is an apocalyptic number.

25964431 is a deficient number, since it is larger than the sum of its proper divisors (1366569).

25964431 is a wasteful number, since it uses less digits than its factorization.

25964431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366568.

The product of its digits is 25920, while the sum is 34.

The square root of 25964431 is about 5095.5304925003. The cubic root of 25964431 is about 296.1144515707.

The spelling of 25964431 in words is "twenty-five million, nine hundred sixty-four thousand, four hundred thirty-one".